OUTPUT DEVICES


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[Charel Farah]

Printer


In computers, a printer is an output device that accepts text and graphic from a computer and transfers the information to paper usually to standard size sheets of paper. Printers are sometimes sold with computers, but more frequently are purchased separately. Printers vary in size, speed, sophistication, and cost. In general, more expensive printers are used for higher-resolution color printing. You can print with colors or without colors.inkjet_printers_pma_2008_1.jpg printer.jpg(Millie Breese)
Computer Screens


The computer monitor is an output device that is part of a computer's display system. This system sends signals into text and pictures and displays them on a computer screen.
The computer sends a signal to the video adapter, telling it what thing to display. The video adapter converts that signal to a set of instructions that thing the screen how to draw the thing on the screen.



Another term for display screen. The term monitor, however, usually refers to the entire box, whereas display screen can mean just the screen. In addition, the term monitor often implhttp://www. http://www.pccomputernotes.com/monitors/monitors1.htmwebopedia.com/TERM/M/monitor.htmlies graphics capabilities.
FlatPanelLCDMonitors.jpgdell%20p991.jpg

(Ruby)
Computer speakers

Did you ever wonder how speakers work? Believe it or not, they use magnets!
A computer speaker is an output devise. It sends out sound that we want in the computer. Most computers have two speakers, one for the left and one for the right.
Computer Speaker Differences
The main difference between computer speakers and other sorts is that the computer speakers are more likely to have amplifiers and filters built right into them. These are called powered speakers. When you turn on your computer speaker, an amplifier increases the strength of the signal. The signal coming from your computer is not very loud, but with the amplifier on, some computer speakers can make a lot of noise.


Referance


http://littleshop.physics.colostate.edu/Videos/Electricity&Magnetism/howspeakerswork/speakers.htm




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(Kendal Pittman)

How Headphones Work

People can’t see it, but the air has waves that can carry sound. Headphones have cones made out of plastic or paper fiber. This cone vibrate and makes the waves that carry the music. Behind the coil is a permanent magnet. If you were to dangle a pair of earbuds they will stick together because of these magnets. When you plug your headphones in to a MP3 player, an electrical signal is sent to the metal coil. If you were to take apart a pair of headphones, you would find the setup is really quite simple. Headphones are a way to get information out of the computer (output).

headphones.jpg

As you can see from these photos, headphones come in all sizes and shapes.